Home / 51,918.20-71,644.20-30,704.30

Finding the Fourth Proportional to 51,918.20, 71,644.20 and 30,704.30

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Solution

The fourth proportional to 51,918.20, 71,644.20 and 30,704.30 is: 42,370.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,918.20 : 71,644.20 = 30,704.30 : x
  2. Step 2: Convert to fraction form
    51,918.20/71,644.20 = 30,704.30/x
  3. Step 3: Cross multiply
    51,918.20x = 71,644.20 × 30,704.30
  4. Step 4: Simplify right side
    51,918.20x = 2,199,785,010.06
  5. Step 5: Solve for x
    x = 2,199,785,010.06/51,918.20
  6. Step 6: Final answer
    x = 42,370.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.